Heating-boiler.



H. M. WELLS.

HEATING BOILER.

APPLICATION FILED AUG.4. 191s.

L16$2Q$ Patented Dec. 14, 1915 2 SHEETS-SHEET WITNESSES: INVENTOR:

ATTORNEY.

(OLUMIHA PLANOGRAPH C01, WASHINGTON. n. c.

H. M. WELLS.

HEATING BOILER.

APPLICATION FILED AUG-4, 191s.

LIMEM, Patented Dec. 1 1, 1915.

2 SHEETS-SHEET 2.

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WITNESSES: I

A TTORNEY.

COLUMBIA PLANOGRAIH (20., WASHINGTON, D. c.

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HARRY MELVIEN WELLS, OF ALEXANDRIA, INDIANA.

HEATING-BOILER,

To all whom it may concern Be it known that I, HARRY MELVIEN VELLS, a citizen of the United States, residing at Alexandria, in the county of'Madison and State of Indiana, have invented a new and useful Heating-Boiler, of which the follow ing is a. specification, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon.

The present invention relates to boilers that are designed for heating Water or for generating steam to be used for various pur poses, particularly for heating buildings, the invention having reference morepan ticularly to acombined boiler and furnace and especiallyto various improvements in the heating boiler forming the subjectmatter of Letters Patent of the United States, No. 905,613, granted to me December 1, 1908, and various modified forms thereof.

An object of the'invention is to" provide improvements in heating boilers" of the above mentioned type in which there may be smoke-fines extending from a combustion chamber, to which there may be no con.-

venient access a particular object of the in- V vention being to improve the construction of heating boilers of the aforementioned type so as to permit repairs or renewals of the smoke flues to be conveniently and" cheaply made, and to permit convenient removal of soot and ashes from the combustion chamber. A still further object of the invention is to provide improved furnace construction in heating boilers of the'above mentioned character that will permit of improved con trol of the fire and prevent ashes from the ash pit entering the combustion chamber.

With the above mentioned and other objects in view, the invention consists in certain improvements in heating boilers comprising an improved. fire-grate support provided with a door, a novel form and arrangement of combustion chamber extension, serving as a soot or dust receptacle, which is removableto permit workmen to enter the combustion chamber for making repairs, the invention consisting further in the parts and combinations and arrangements of parts as hereinafter particularly described and claimed.

Referring to the drawings, Figure 1 is a side elevation of the improved heating boiler as preferably constructed, omitting its 16 thereon.

Specification of Letters Patent. Pafi qgntqgfl D 1141;, 19515.

Application filed August 4, 1913.

Serial No. 782,832.

covering for preventing radiation of heat;

Fig. 2, a perspective view of a filling frame L.

comprising a part of the improvement; Fi g. 3, a. transverse section on the line A A in Fig. 1; Fig. 4-, a fragmentary section on the line B B in Fig. 1; Fig. 5', a" perspective view of the improved combustion chamber extension, minus the cleaningout door thereof; Fig. 6, a longitudm-al section on the line @C 1n F 1g. 3,-and Fig. 7, a horizontal secti'on'approximately on the line DD in re; s. a

In the different figures of the drawings, i

corresponding reference characters indicate like elements or features of construction herein referred to.

' In order that the present improvements T shall be clearly understood, the structure formingthe' subjectmatter of the above mentioned Letters Patent will first bebriefiy referred to.

The boiler comprises an outer part or T tions 7 and Srespeetively, there being a water space between the outer and inner parts ofthe boiler, the forward end of the inner part being suitably attached to the head 4, therearend having ahead 9 suitably attached thereto; The opposite or rearend of the outer part has a head 10 attached thereto, and a plurality of draft fiues 11' are connected to the head 9 and also tothehead 10, the heads being suitably perforated to receive the flues. A plurality of water tubes 12 are horizontally arranged in the inner part and have their ends connected to' the side portions 7 and 8 thereof, the tubes collectively occupying much of the space within the inner part, excepting a clear space opposite the head 9, which serves as a combustion chamber, and also a clear space in the lower forward portion of the inner part which serves as a fire-box. A boiler front 13 is secured to the head a and is provided with a door frame 141, the front having a fire brick lining 15, and the front has a fire door The front has also an ash pit door frame 17 provided with a door 18, a

rail 19 being supported on the inner side of the front on a plane above the frame 17.

The improvement comprises a plate 20 or close the doorway, the door having hinge members 24 that are connected to the hinge pin, the lower portion of the front of the door having an eye 25 thereon so that the door may be opened by means of a hook inserted through the door frame 17 to permit dust and ashes to be scraped from the bottom of the inner part beyond the plate or wall. Suitable fire-grates 26 are supported upon the rail l9 and the plate or wall 20. lhe space between the grates and the water tubes forms the fire-box proper, the space below the grates forming the ash pit.

Suitable stay-bolts 27 and 27 are connected to the outer part and the inner part of the boiler, similar but longer stay-bolts 2S and 29 and29 being similarly connected to the several parts. A smoke-box 30 is attached to the head 10 and has a door 31 and also a chimney connection 32. A suitable number of outlet pipes 33 are connected to the upper portion of the outer part 1, a suitable number of inlet pipes 34 being connected to the lower portion of the outer part or shell 1. The heating boiler as heretofore constructed has two openings 35 and 36 in opposite portions thereof, so as to be oppo site to the side portions 7 and 8 respectively, and provided with frames 37 and 38 to which caps 39 and 40 are removably secured so as to form portions of the outer part of the boiler, the ends of the water tubes being accessible when the caps are removed. Preferably stay-bolts 41 and 42 are connected to the caps and the adjacent side portions 7 The improvement includes an aperture 48 which is formed in the curved portion 5 of the inner part of the boiler, adjacent to the head 9 so that soot, when the flues 11 are cleaned, may be dropped through the aperture, the under portion of the outer part or shell 1 having a similar aperture 44 therein that is fairly below the aperture 43. A manhole frame 45 is provided which has an opening 46 therein corresponding to the aperture 44, the frame having also marginal rivet holes 47 therein to receive rivets 48, whereby the frame is secured to the outer and inner parts of the boiler, the frame being arranged between the said parts so that the opening 46 forms a continuation of the apertures 43 and 44 to form a man-hole. The corner portions of the frame 45 preferably have screw holes 49 therein. A receptacle or ash box 50 is formed of suitable metal, and is preferably formed as a square tube or rectangular box, having an opening 51 extending therethrough, being open at its opposite ends, one end portion having a flange 52 thereon, in which are a suitable number of bolt holes 53, the flange and the top of the receptacle being curved concavely to conform to the convexity of the under portion f the shell 1, to which the receptacle is connected removably by means of screw bolts 54. The lower end of the receptacle preferably is provided with a flange 55 which is seated upon a bottom plate 56 suitably supported. The vertical side portion of the receptacle or box is provided with a hinge member 57 and r. door catch 58, a cleaning out door 59 being provided that has a hinge member 60 which is connected to the hinge member 57, the door having a latch 61 thereon that normally engages the catch 58, the door normally closing a doorway 62 formed in the wall of the ash box 50 and through which the soot, line ashes, or dust may be removed from the receptacle.

In case the flues ll require repairing or replacement, the receptacle or box 50 may be disconnected from the boiler and moved slidingly forward or rearward or removed so that a workman may enter the aperture in the boiler and work in the space between the water tubes and the head 9, without it being necessary to remove any of the water tubes.

In practical use, the fuel is placed upon the grates 26 through the fire-door l6 and the tire controlled by means of the door 18 or the register therein, and in some cases the door 23 or the door 59 may be opened while the door 16 is closed and if there be a strong draft in the chimney, much of the finer dust may be drawn out through the lines. The results of the operation will be readily understood from the foregoing and by refer ence to the said Letters Patent.

Having thus described the invention, what is claimed as new is 1. In a heating-boiler, the combination of a horizontal shell part having an aperture in the under portion thereof, an inner part within the shell part and having an aperture in the under portion thereof, a rectangular frame between said parts and secured thereto to form a continuation of the apertures, a rectangular receptacle detachably secured to the under portion of said shell at the aperture and extending downward therefrom, the vertical side wall of the receptacle having a doorway therein, a closure plate extending under the lower end of the receptacle and permitting the receptacle to be slidingly moved along the shell When detached therefrom, means for normally holding the plate to the end of the receptacle, and a door mounted on said side wall and normally closing said doorway.

2. In a heating boiler of the class described, the hereindescribed improvement consisting in combination, with the apertured outer shell part and the apertured inner part, of the rectangular frame inserted between said parts and secured thereto to form a continuation of the apertures, the outer side of said frame having screw-holes therein to receive screw-bolts, a hollow rectangular receptacle removably seated on said shell part and having a flange extending opposite to said frame and having bolt-holes therein, the side wall of said receptacle having a doorway therein and hinge members on one side of the doorway, screw-bolts inserted in said bolt-holes and said screw-holes and removably securing one end of said receptacle to said shell part, a closure plate removably supported against the opposite end of said receptacle, and a door connected to said hinge members and normally closing said doorway.

3. In a heating-boiler of the class described, the herein-described improvement consisting in the combination, with the outer shell, the inner part within the shell and the Water tubes connected to the opposite side portions of the inner part, of a wall upon the bottom of said inner part adjacent to the forward side of the lower one of said tubes, the middle of the lower portion of said wall having a doorway therein, said wall extending upward to a higher plane than that of said one of the tubes to support grate bars adjacent to the tube, and a door hinged to said wall above said doorway.

'In testimony whereof, I affix my signature in presence of two witnesses.

HARRY MELVIEN WELLS.

Witnesses:

J. E. HALL, fREssA BROWN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

